Seeing how anyone paying attention has known that the 500 series is mostly the 400 series with some of the kinks worked out it shouldn't come as a surprise that the performance uplift isn't exactly earth shattering.
From what I've seen the major changes are that they've fixed the dodgy power delivery on the reference and reference-based boards and moved to a more mature manufacturing process. The original 400 series was made using Samsung's 14nm LPP process and the 500 series seems to be made with Samsung's 14nm LPC process, which mainly differs in higher yields and fewer manufacturing stages, thus decreasing manufacturing costs.
What this all means in practice is that the 500 series cards will clock higher than their 400 series equivalents. Apparently pretty much all 580s will overclock into the 1400s if they don't come clocked that high out of the box and many of them do. For comparison none of the reference or reference-based 480s could reach and most of the heavily improved cards were either unable to reach those clocks or had a hard time doing so.
From what I've seen the major changes are that they've fixed the dodgy power delivery on the reference and reference-based boards and moved to a more mature manufacturing process. The original 400 series was made using Samsung's 14nm LPP process and the 500 series seems to be made with Samsung's 14nm LPC process, which mainly differs in higher yields and fewer manufacturing stages, thus decreasing manufacturing costs.
What this all means in practice is that the 500 series cards will clock higher than their 400 series equivalents. Apparently pretty much all 580s will overclock into the 1400s if they don't come clocked that high out of the box and many of them do. For comparison none of the reference or reference-based 480s could reach and most of the heavily improved cards were either unable to reach those clocks or had a hard time doing so.
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